Planooraph co



W.\L. JENKINS, SR., AND W. L. JENKINS, In.

DOUBLER.

APPLICATION FILED MAR. 7. 1919.

Patented Aug. 19, 1919.

2 SHEETS-SHEET I.

THB COLUHBM PLANOGRAPH C0., WASHINGTON D C W. L.IENKINS, Sn., AND W. L. JENKINS, In.

DOUBLER. 1

AEPLICATION FILED MAR. 7. T919. 1 ,3 13,635. Patented Aug. 19, 1919.

2 SHEETS-SHEET 2.

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UNITED STATES PATENT OFFICE., 4`

WILLIAM L, JENKINs, sn., AND WILLIAM` L. JENKINS, Jn., or NILEs, oHIo.

DOUBLER; l

Specication of Letters Fatent.

Patented Allg.. 1.9, 1919.-

App'licaton led March 7, 1919. Serial No. 281,118.

To all rwhom it may concern.'

Be it known that we, WILLIAM L. JEN- KINs, Sr., and WILLIAM L. JENKINS, Jr., citizens of the United States, `both residing at. Niles, in the county of Trumbull and State of Ohio,` have invented new and useful Improvements in Doublers, of which-the following is a specication.

i Our invention relates tomaehies for doubling or foldingsheets and plates. It was especially designed for doubling metal sheets in a sheet mill, but it may' belused for various other purposes. Thetop of the machine is ypreferably on the level of the mill floor adjacent to one or' more stands of rolls.

'It isjcommon practice for the workmen to double or fold the sheets in a sheetmillby the aid of' tongs which are lused to bring the opposite* edges of the sheets together, while the middle portions are beaten down by workmen jumping 011 them. or by the use of tongs or other devices". Itis the object of the present invention to do the doubling entirely by machinery after the sheets are laid upon the machine. Itis a furthery .ob-

ject to providegages'whereby the sheets may Ibe automatically adjusted transversely so as to vibe bent truly at right angles with. their sides. We provide adjustable gages for eentering or adj ustin the sheets longitudinally so that they` may e doubledvon` any selected i transverse line. We provide also` novel mandrel or' hold-down devices for the metal at the place where it is to be leent.Y Preferably we use one of these devices as one of the gagesfor adjusting the sheets at right angles to the line of folding. Other objects will appear hereinafter.

Referring to the accompanymg drawings, Figure 1 is a plan view of one form of our novel machine, with parts brokenaway; F ig.` 2, a vertical section on the line II-II of Fig'. 1;Fig. 3, ay side elevation of Fig. 1, with the doubler leaf or y'rnember partly elevated; Fig.A 4,- an end elevation of our said machine aiid'Fig.l 5, a skeleton plan of some of the gage mechanisms.

On the drawings, l designa-tes the hori- `zontal |base orbed o'f our machine, andv 3', 4,1and 5 are three vertical parallel members erected on the base l, l6 is a drive-pulley on the shaft 7 j ou'rnaled in the member 4 and the standard or support 8. The shaft 7 has the pinion 9 which meshes with the spurgrear 10 on -thecrankshaft 11 iQllrlelf@ PRI the members 3 and 4, To the crank 12 on the shaft l1 is connected one end of the pitman 13, having its remaining end Apivoted to one end of the recproeatory rack ,14 guided between the ways 1 5 resting onl the base 5etweeu'the members 3 and 4: '.lherwek gears Wththe pinion' 16 v01u the shaft 17 jour- I lalcdl inthe 'members 2 and 3; The clutch 7 f connects' the pulley 6 withI theA shaft 7'.

v 18, is the sheet folding' member 4secured be noticed that the member 18 has a' down-l ward bend 20 near the shaft 17 to receive the metal adjacent to the folded linev at the close of a folding operation in case it should buckle or. hump at the-lineof folding. The outer` or free end of thel folding-member 18 is preferablycut away at each side as shown at21, and rests upon the slotted right-hand end 22 [of thetop of the machine, this end of the top lying; a little `below the members Qandv 3. .The member'lf has the slot 23 extending from the free endthereof toward the shaft 17 and Ilying "midwaybetween the sidesv of the member.

' Beneath the slot 23 is aA pair of spaced horizontal guides 24 supported by the legs 25 on the lbase 1. On these guides the gage# holder 26 is slidable' beneath the slot andv in line therewith. Thegage-holder has al number of holes arranged 'lengthwise thereof, any one; beingadapted to receive the vertical gage+pin 27 extend-ing up throughl the slot 'above thetable-top.. To thefbottom of the table-top 19 at: the opposite end `of the machine from the guidesy 24, we secure the spaced guides 28, on which the 4gage-holder 29 reciprocates toward and` from the shaft L17 midway between the members 2 ,and 3. This@ gage-holder has several holes arranged lengthwise thereofto receive thevgage-pin 30,` which travelsin the slot 31 in the top 19.

32 is a rockfshaft jOurnaled in the supports 33011' the base'fland is operated by thehandle 34. ffii@ .1991heift 1S secured t0 afre-nders are uided in their movements transversely of the machine by the rods 41 and `42 secured in pairs in the members 2 and 3. 43 isa rock-shaft journaled in the blocks 44 and 45 on the rods 41and 42, and in the block 46 on the rods 47 secured in the members 2 and 3 between the rods 41 and 42. The' shaft '43 is provided with the arms 48 and 49. The armv48 extends equally above and below the shaft 43 and has its lower j end connected to the block 39 by the link 50. The arm 49 extends belowlthe shaft 43 andr is connected to the block 40 by the link 51. The rods 47 carry the sliding finger 52, which is slightly back of a line joining the innerfaces of the gage-fingers 39 and 40, and is moved on those rods by the link 53 connected to the lower end of the arm 48. The rods 47 carry also the sliding gageLiinger 54 set in a recess in the member2. This linger is connected by the link 55 to the upper end of the arm 48. The fingers 52 and 54 eachA has a horizontal mandrel or hold-down pin 56 extending, one towardfthe other, slightly above the top of the table and a little to the left of the shaft 17.

The shaft 43 is provided with a horizontal arm 57, connected by the vertical link 58 to the arm 59 on the rock-shaft 60, which is operated by the handle 61. 'A The parts beingas in Figs. 1 and 2, a sheet to be doubled is placed on the doubler-mem ber 18 and on the end 19 of the'table with its ends between the gage-pins 27 and 30, and its sides between the gage-ngers 39 and 40 and the iinger 54. The handle 34 is operated which causes the sheet to be centered so as to bring the placeto be folded exactly in line with the mandrel pins 56. Thehandle 61 is then'operated to cause the fingers 39 and 40 and the inger 54 to center the sheet, the sheet engaging bothk the fingers 39 and 40 and thereby insuring that the sheet willk lie exactly atright angles to the fold to be made over the pins 56. The operation of the han- -dle 61 lcauses lthe pins 56 to pass above the sheet` or pack to be'bent." The belt wheel 6 being vset 'inV operation by a motor or by the clutch ,connection 7', or other powertrans- 'mitting'means, the rack 14 is 'caused to move to the left,which causes the doubler-member '18 to turn with the shaft 17 and double or bend the right-hand end of the sheet over the pins 56 until it lies upon the left-hand end thereof. The continued movement of the wheel 10 causes the rack to move to the leftand the doubler member to return to its original position, when the machine is stopped preparatory tp another operation.

2. In a doubler, a table, two gage-fingers thereon for one side ofr a sheet, the fingers being on Vopposite sidesl of the line where the sheet is to be doubled, a single movable gage-finger engageable with the remaining side of the sheet to cause the sides of the sheet to engage all three gage-fingers, mandrel pins over which the sheet may be bent, one of the pins being carried by the single finger, and means for doubling the ksheet transversely between the first two gage-fingers and over the mandrel pins.

- 3. In a doubler, a tabletwo gage-fingers thereon for one side of a sheet, the'iingers being on' opposite sides of the line where the sheet is to be doubled, a movable gagefinger engageable with the remaining side of the'sheet to cause the sides of the sheet to engage all three gage-lingers, a mandrel pin carried by the movable gage finger and movable over the edge ofthe sheet, a second mandrel pin movable over the other edge of the-sheet,l and means forl doubling the sheet transversely between the first two gage-fingers and over the mandrel pins. 4. Ina doubler, a table, a doubler member thereon, and a rock-shaft carrying the same, there being a transverse bend in the said member adjacent to its axis of movement and adapted to lie somewhat above the line at which the sheet is doubled to receive any surplus metal protruding above the line of "doubling,` v

5. Ina Adoubler for sheets, gage-fingers adapted to engage the opposite sides of sheets 'ofldiiferent' widths and to adjust them, and a mandrel over which the sheets doubled, a 4carrier for each mandrel, a table for the Vsheet having lateral recesses into which the mandrels and their carriers may rest out ofthe lines of travel of the sides of thesheet as it is fed upon the table, means for projecting the mandrels over the edges of the sheet, and a pair of gage. fingers on opposite sides of the sheet, one of the gage- Sr., at Canonsburg, Pa., this 4th day of fingers being movable with one of the car- March, A. D. 1919, and by the said WILLIAM rers transversely of the sheets so as to en- L. JENKINS, Jr., at Canonsburg, Pa., this 10 gage the edge of sheets of different Widths 4th day of March, A. D. 1919. 5 While in engagement with the other gegenger. WILLIAM L. JENKINS, SR. Signed by the said WILLIAM L. JENKINS, WILLIAM L. JENKINS, JR.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. 0. 

